• J. G. Braun Co.

• Jasco Window Corp.

• Joyce Mfg. Co.

• Laurence: C.R. Laurence Co.

• Loewen Windows

• Maximum Security Products Co.

• Megawood Industries

• Mesker Door

• Milgo/Bufkin

• Monarch Manufacturing, Inc.

• National Bullet Proof, Inc.

• National Mfg.

• Niche Architectural Inc.

• NuAir

• Offenhauser Co.

• Optimum Window Mfg. Corp.

• Overly Manufacturing Co., Inc.

• Peerless Products

• Pioneer Industries, Inc.

• Plyco Corp.

• Pomeroy Corporation

• Portal

• Premdor, Inc.

• Ready Access

• Regal Research & Manufacturing Co.

• Reliance Windows Ltd.